Diquat
Epcor Water - Mohave
Diquat is a herbicide used on potato crops and aquatic weeds.
38
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 16 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 16 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 6 ppb
The EWG Health Guideline of 6 ppb for diquat was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cataracts.
EPA Maximum Contaminant
Level (MCL) 20 ppb
The legal limit for diquat, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-10 | 550-41482-1S | ND |
| 2015-09-15 | 550-51357-1S | ND |
| 2015-09-15 | 550-51357-2S | ND |
| 2015-09-15 | 550-51357-3S | ND |
| 2015-09-15 | 550-51357-4S | ND |
| 2015-09-15 | 550-51357-5 | ND |
| 2015-09-15 | 550-51357-6 | ND |
| 2015-09-15 | 550-51357-7S | ND |
| 2015-09-15 | 550-51357-8TT | ND |
| 2015-11-30 | 550-55138-8T | ND |
| 2015-11-30 | 550-55138-6 | ND |
| 2015-11-30 | 550-55138-5 | ND |
| 2015-11-30 | 550-55138-4 | ND |
| 2015-11-30 | 550-55138-3 | ND |
| 2015-11-30 | 550-55138-2 | ND |
| 2015-11-30 | 550-55138-1 | ND |
| 2016-02-02 | 550-58216-2 | ND |
| 2016-08-22 | 550-68530-1S | ND |
| 2017-03-13 | 550-79132-2T | ND |
| 2017-06-08 | 7060966-01 | ND |
| 2017-08-10 | 7081254-01-SOC | ND |
| 2017-11-15 | 7111744-01 | ND |
| 2018-06-13 | 680-153950-4 | ND |
| 2018-06-13 | 680-153950-3 | ND |
| 2018-06-19 | 680-154187-1 | ND |
| 2018-06-20 | 680-154393-1 | ND |
| 2018-06-25 | 680-154528-1 | ND |
| 2018-06-25 | 680-154581-1 | ND |
| 2018-06-27 | 680-154661-1 | ND |
| 2018-08-23 | 550-108576-1 | ND |
| 2018-10-15 | 550-111853-1 | ND |
| 2018-10-15 | 550-111725-1 | ND |
| 2018-10-15 | 550-111724-1 | ND |
| 2018-10-15 | 550-111723-1 | ND |
| 2018-10-15 | 550-111722-1 | ND |
| 2018-10-16 | 550-111854-1 | ND |
| 2018-10-16 | 550-111857-1 | ND |
| 2018-10-16 | 550-111856-1 | ND |